After long-term use, cross roller bearings will have various situations due to wear, affecting the use of bearings. Among them, abnormal noise during the use of bearings is a common situation. There are many reasons for the abnormal noise of bearings. Different causes have different solutions. The following editor will introduce the reasons and solutions for the abnormal noise of cross roller bearings.

1. Reasons for abnormal noise of cross roller bearings

1. Bearing wear

When there are bumps, dents or serious faults on the inner and outer raceways of the bearings, the cross roller bearings will cause abnormal noise. Defects such as surface impact and scratches of the rolling body will also cause smooth and crisp noises in the cross roller bearings. After long-term use, the bearings are prone to wear, resulting in damage to the meshing relationship between the bearings and the shafts, causing the shafts to deviate and cause periodic vibration pulses.

2. Too small shaft clearance

The axial clearance of the cross roller bearing generally requires the smaller the rotation clearance, the better. However, if the rollers in the raceways are squeezed too tightly and the axial clearance is too small, the friction resistance will increase, and there will be a violent collision between the rolling body and the cage pocket, resulting in abnormal noise.

3. Foreign objects and debris entering the bearing raceway

Foreign objects such as impurities, iron filings, etc. entering the bearing raceway running area will cause intense friction with the rollers in the raceway. At this time, even small dust will cause periodic or non-periodic vibration pulses in the bearing, causing abnormal noise during the operation of the bearing.

4. Insufficient lubricant performance

Poor lubricant performance or poor lubricant quality used in cross roller bearings will cause abnormal noise during use. Improper bearing sealing leads to oil or grease leakage, friction between the rolling element and the groove of the cage, and vibration pulses caused by grinding lubricants during the operation of the rolling element, which causes abnormal noise in the bearing.